JEE Main Chemistry question

Chemistry Equilibrium JEE Main

The solubility in water of a sparingly soluble salt AB₂ is 1.0×10⁻⁵ mol/litre. Its solubility product is:

(A)1×10⁻¹⁵
(B)1×10⁻¹⁰
(C)4×10⁻¹⁵Correct
(D)4×10⁻¹⁰

Answer: (C)

Solution

Ksp=s(2s)²=4s³=4×(10⁻⁵)³=4×10⁻¹⁵.

Question ID VK-136311